What was found in ZIP 63028
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 6779 µg/L 68% of the EPA limit 10000 µg/L Highest in the ZIP: CLARK COUNTY CONS PWSD 1 · 7,140 people · 2019 | 3/5 | SYR4 |
| Fluoride | 1212.5 µg/L 30% of the EPA limit 4000 µg/L Highest in the ZIP: JEFFERSON COUNTY PWSD 7 · 6,100 people · 2017 | 3/5 | SYR4 |
| Copper | 76.87 µg/L 5.9% of the EPA limit 1300 µg/L Main supplier: FESTUS PWS · 13,000 people · 2019
Highest in the ZIP: 855.7 µg/L — JEFFERSON COUNTY PWSD 5 · 8,000 people · 2019 | 5/5 | SYR4 |
| Barium | 189.55 µg/L 9.5% of the EPA limit 2000 µg/L Highest in the ZIP: JEFFERSON COUNTY PWSD 7 · 6,100 people · 2017 | 3/5 | SYR4 |
| TTHM | 73.1 µg/L 91% of the EPA limit 80 µg/L Main supplier: FESTUS PWS · 13,000 people · 2019
Highest in the ZIP: 75.5 µg/L — HERCULANEUM PWS · 5,000 people · 2019 | 5/5 | SYR4 |
| Chloroform | 36.215 µg/L No EPA limit set Main supplier: FESTUS PWS · 13,000 people · 2019
Highest in the ZIP: 39.425 µg/L — HERCULANEUM PWS · 5,000 people · 2019 | 5/5 | SYR4 |
| Total Haloacetic Acids (HAA5) | 31.975 µg/L 53% of the EPA limit 60 µg/L Main supplier: FESTUS PWS · 13,000 people · 2019 | 3/5 | SYR4 |
| Lithium | 19.1 µg/L No EPA limit set Main supplier: FESTUS PWS · 13,000 people · 2024
Highest in the ZIP: 27 µg/L — JEFFERSON COUNTY PWSD 5 · 8,000 people · 2024 | 4/5 | UCMR-5 |
| Bromodichloromethane | 25.1 µg/L No EPA limit set Main supplier: FESTUS PWS · 13,000 people · 2019 | 5/5 | SYR4 |
| Lead | 5.2655 µg/L 35% of the EPA limit 15 µg/L Main supplier: FESTUS PWS · 13,000 people · 2019
Highest in the ZIP: 18.484 µg/L — HERCULANEUM PWS · 5,000 people · 2017 | 5/5 | SYR4 |
| Dichloroacetic Acid | 16.48 µg/L No EPA limit set Main supplier: FESTUS PWS · 13,000 people · 2019
Highest in the ZIP: 17.8 µg/L — HERCULANEUM PWS · 5,000 people · 2019 | 5/5 | SYR4 |
| Dibromochloromethane | 15.075 µg/L No EPA limit set Main supplier: FESTUS PWS · 13,000 people · 2019
Highest in the ZIP: 15.835 µg/L — HERCULANEUM PWS · 5,000 people · 2019 | 5/5 | SYR4 |
| Monobromoacetic Acid | 11.71 µg/L No EPA limit set Main supplier: FESTUS PWS · 13,000 people · 2019 | 3/5 | SYR4 |
| Chromium | 10.1475 µg/L 10% of the EPA limit 100 µg/L Highest in the ZIP: JEFFERSON COUNTY PWSD 7 · 6,100 people · 2017 | 3/5 | SYR4 |
| Monochloroacetic Acid | 9.78 µg/L No EPA limit set Highest in the ZIP: HERCULANEUM PWS · 5,000 people · 2019 | 1/5 | SYR4 |
| Gross Alpha, Excl. Radon And U | 6.62 pCi/L 44% of the EPA limit 15 pCi/L Highest in the ZIP: JEFFERSON COUNTY PWSD 5 · 8,000 people · 2012 | 1/5 | SYR4 |
| Trichloroacetic Acid | 5.69 µg/L No EPA limit set Main supplier: FESTUS PWS · 13,000 people · 2019 | 3/5 | SYR4 |
| Dibromoacetic Acid | 4.75 µg/L No EPA limit set Main supplier: FESTUS PWS · 13,000 people · 2019
Highest in the ZIP: 4.777 µg/L — HERCULANEUM PWS · 5,000 people · 2019 | 3/5 | SYR4 |
| Bromoform | 3.054 µg/L No EPA limit set Main supplier: FESTUS PWS · 13,000 people · 2019
Highest in the ZIP: 3.66 µg/L — HERCULANEUM PWS · 5,000 people · 2019 | 4/5 | SYR4 |
| Arsenic | 2.11 µg/L 21% of the EPA limit 10 µg/L Highest in the ZIP: JEFFERSON COUNTY PWSD 7 · 6,100 people · 2017 | 2/5 | SYR4 |
| Combined Radium (-226 And -228) | 1.82 pCi/L 36% of the EPA limit 5 pCi/L Highest in the ZIP: JEFFERSON COUNTY PWSD 5 · 8,000 people · 2016 | 2/5 | SYR4 |
| Xylenes, Total | 1.3 µg/L 0% of the EPA limit 10000 µg/L Highest in the ZIP: JEFFERSON COUNTY PWSD 7 · 6,100 people · 2017 | 1/5 | SYR4 |
| Cadmium | 0.2780 µg/L 5.6% of the EPA limit 5 µg/L Highest in the ZIP: JEFFERSON COUNTY PWSD 7 · 6,100 people · 2017 | 1/5 | SYR4 |
| Pfba | 0.0092 µg/L No EPA limit set Main supplier: FESTUS PWS · 13,000 people · 2024 | 2/5 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: FESTUS PWS · 13,000 people · 2025
Highest in the ZIP: 0.0039 mg/L — JEFFERSON COUNTY PWSD 7 · 6,100 people · 2023 | 5/5 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
Water suppliers serving ZIP 63028
| Supplier | State | Population served |
|---|---|---|
| FESTUS PWS | MO | 13,000 |
| JEFFERSON COUNTY PWSD 5 | MO | 8,000 |
| CLARK COUNTY CONS PWSD 1 | MO | 7,140 |
| JEFFERSON COUNTY PWSD 7 | MO | 6,100 |
| HERCULANEUM PWS | MO | 5,000 |
Frequently asked questions about ZIP 63028 tap water
Is the tap water in ZIP 63028 safe to drink?
EPA testing detected 25 contaminants across the water suppliers serving ZIP 63028. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 63028?
5 public water suppliers report EPA drinking-water monitoring for ZIP 63028. Each is listed above with its population served.
What contaminants are in ZIP 63028's water?
EPA monitoring detected Nitrate-Nitrite, Fluoride, Copper, Barium, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.